Valve construction for internal-combustion engines.



L. C. ROBINSON. VALVE cousmucnou FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED JAN-7.1913.

Patented June 20, 1916.

THE COLUMBIA PL\NOORAPH C0,, wnSl-uma'rou, D. c.

it an VALVE CONSTRUCTION FOR INTERNAL-COMBUSTION ENGINES...

To all whom it may concern Be it known that I, LEWIS C. ROBINSON, citizen of the United States, residing at Salt Lake City, in the county of Salt Lake and State of Utah, have invented certain new and useful Improvements in Valve Construction for Internal-Combustion Engines, of which the following is a specification.

This invention relates to internal combustion engines and particularly to that type of engine wherein the intake and exhaust valves are operated by an auxiliary shaft that is suitably connected to the main shaft.

The object of the present inventlon is to provide efficient control of the explosive mixture to the engine cylinder, and permit the exhaust gases to easily escape by having the present novel arrangement of sllde valves so timed that a very rapid cut off and intake is effected.

To this end the present invention contemplates a simple, practical, and reliable construction wherein the engine casmg is provided with a pair of slide valves set obliquely to each other, which are actuated by separate valve rods mounted on the same auxiliary valve operating shaft which receives its power from the main shaft as above explained.

IVith the above and other objects in view which will more readily appear as the nature of the invention is better understood, the same consists in the novel construction, combination and arrangement of parts hereinafter more fully described, illustrated and claimed.

A preferred and practical embodiment of the present invention is shown in the accompanying drawings, in which:

Figure 1 is a vertical sectional view through an engine cylinder and its adjacent parts showing the present invention. Fig. 2 is a transverse sectional view on the hne 2-2 of Fig. 1.

Similar reference numerals designate corresponding parts on the several figures of the drawings.

Referring specifically to the accompanying drawings, the cylinder of the engine is indicated by the numeral 1, and is suitably supported by the casing C, which also incloses the valve operating mechanism hereinafter referred to in detail. Surrounding t5 the cylinder 1 is the usual water acket 2,

. Specification of Letters Patent. Pmlggnted Jullg 2 1916 Application filed January 7, 1913.

Serial No. 740,690.

which is in communication with the water cooling system of the engine (not shown).

A piston 3 is slidably mounted in the conventional and well known manner in the cylinder 1 and is connected to the main crank l by the piston rod 5. The upper part of the cylinder is provided with the intake 6 and the exhaust port 7, said ports being arranged side by side and communicating with the extreme end of the piston chamber. The said ports are respectively controlled by the vertically reciprocating slide valves 8 and 9 which are preferably arranged oblique to each other so as to reduce the size of the combustion chamber and thus increase the compression. The said valves 8 and 9 slide in the vertical guides 10 which are formed upon a portion of the outside of the cylinder 1 and are partially covered by the casing C which extends upwardly along one side of the cylinder. The upper portions of the guides 10 above the inlet and exhaust ports are formed with a hood 11 which entirely incloses and protects the portions of the valve slides above the ports 6 and 7 and which would otherwise be exposed.

J ournaled in the casing C is the auxiliary valve operating shaft 12 which is parallel to and suitably geared to the main shaft 4: as shown at 13, and is provided with the crank portions 14 disposed at an angle of 90 degrees. The slide valves 8 and 9 are suitably connected to their respective crank portions 14 by the rods 15.

In the operation of the engine, it will be obvious that with the crank portions 14 conventionally arranged upon the shaft 12, the exhaust port 7 will be closed by the valve 9 while the valve 8 uncovers the intake port 6, and at the time of the explosion of the charge within the cylinder, both of the valves 8 and 9 will be closed as shown in Fig. 2 of the drawings.

a'jacketed cylinder provided in one side thereof with parallel inlet and exhaust ports, a crank casing supporting the cylinder and extending along one side of the same to saidrports, guides formed on the side of said'cylinder, said guides being partially inclosed in the extended portion of the crank casing and having a portion projecting beyond the crank casing and formed with a hood, a valve for each of said ports V-slidably mounted Within said guides, said LEWIS CECIL ROBINSON.

Witnesses:

FREEMAN SUMNER, C. E. WEST.

Copies of this patent may he obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. O. 

